CN104798582A - Planting method for maize - Google Patents

Abstract

The invention discloses a planting method for maize. The planting method comprises the following steps of selecting seeds, preparing soil, fertilizing, sowing, performing topdressing and filed management, cutting off male parents and harvesting. The planting method disclosed by the invention has the advantages of lodging-resistance capability, high yield and the like.

Description

A kind of implantation methods of corn

Technical field

The present invention relates to a kind of implantation methods of corn, be applied to the field of planting of corn.

Background technology

Corn nourishment enriches, the important crops of China and food, in the northern area of China, the cultivated area of corn is more extensive, but, in the implantation methods of existing corn, the planting density of corn is larger, this just causes the permeability in field poor, is unfavorable for the growth of corn, and therefore output can reduce greatly, and, planting density is excessive, also easily causes the lodging tolerance of corn to die down, and the output of corn so also can be caused to reduce, and the later stage, bring very large inconvenience also can to artificial harvesting.

Summary of the invention

For solving the defect of prior art, the invention discloses the implantation methods of the high corn of a kind of corn yield.

The invention discloses a kind of implantation methods of corn, concrete steps are as follows:

Step one: seed selection: remove mouldy seed and the seed of skin breakage, select full iblet as seed;

Step 2: wholely: the topsoil of field 10-18 centimetre is smashed, then rakes with rake;

Step 3: fertilising: urea, diammonium phosphate and potassium sulfate are broadcasted sowing in field, wherein, urea 25kg/ mu, diammonium phosphate 20kg/ mu, potassium sulfate 7kg/ mu;

Step 4: sowing: planting seed step one selected is in field, and parental is 1:6, and planting density is male parent is every mu of 800-1000 strain, and female parent is every mu of 4000-4500 strain;

Step 5: topdress: when corn grows to highly for 1.3-1.4m, every mu imposes 5-10 kg urea;

Step 6: field management: every 15-30 days, goes to the field and carries out weeding, rejecting field hybrid strain and be separated strain;

Step 7: surgery male parent: after male parent loose powder terminates, cut down male parent;

Step 8: results: after corn maturation, goes to the field and gathers corn.

In step, by removing mouldy seed and the seed of skin breakage, can effectively avoid after planting occurring disconnected ridge phenomenon of being short of seedling, in step 2, by the topsoil of field 10-18 centimetre is smashed, be convenient to corn and take root growth, strengthen lodging tolerance, by urea in step 3, diammonium phosphate and potassium sulfate broadcast sowing in field, there is provided growth necessary N P and K to iblet, in step 4, parental is 1:6, planting density is male parent is every mu of 800-1000 strain, female parent is every mu of 4000-4500 strain, thus avoid because Field densities is too high, and cause the defect affecting corn yield because permeability is deteriorated, lodging tolerance also strengthens thereupon in addition, and impose urea further by step 5, can effectively prevent maize seedling from occurring the situation of early ageing, thus avoid the defect of the corn underproduction, in addition in step 7, after male parent loose powder terminates, cut down male parent, doing one is like this thoroughly can stop male parent seed to be mixed in female parent, especially mechanical harvest, guarantee seed quality, two is that male parent yields poorly, economic benefit is low, three is surgery male parent greatly to improve maternal field and to ventilate ventilative optical condition, improve maternal output, surgery male parent stepmother instinct volume increase 5-10% in time, in sum, adopt corn planting method of the present invention effectively can improve the output of corn, and lodging tolerance significantly strengthens.

Embodiment

The invention discloses a kind of implantation methods of corn, concrete steps are as follows:

Step one: seed selection: remove mouldy seed and the seed of skin breakage, select full iblet as seed;

Step 2: wholely: the topsoil of field 10-18 centimetre is smashed, then rakes with rake;

Step 3: fertilising: urea, diammonium phosphate and potassium sulfate are broadcasted sowing in field, wherein, urea 25kg/ mu, diammonium phosphate 20kg/ mu, potassium sulfate 7kg/ mu;

Step 4: sowing: planting seed step one selected is in field, and parental is 1:6, and planting density is male parent is every mu of 800-1000 strain, and female parent is every mu of 4000-4500 strain;

Step 5: topdress: when corn grows to highly for 1.3-1.4m, every mu imposes 5-10 kg urea;

Step 6: field management: every 15-30 days, goes to the field and carries out weeding, rejecting field hybrid strain and be separated strain;

Step 7: surgery male parent: after male parent loose powder terminates, cut down male parent;

Step 8: results: after corn maturation, goes to the field and gathers corn.

Embodiment 1

Step one: seed selection: remove mouldy seed and the seed of skin breakage, select full iblet as seed;

Step 2: wholely: the topsoil in 15 centimetres, field is smashed, then rakes with rake;

Step 3: fertilising: urea, diammonium phosphate and potassium sulfate are broadcasted sowing in field, wherein, urea 25kg/ mu, diammonium phosphate 20kg/ mu, potassium sulfate 7kg/ mu;

Step 4: sowing: planting seed step one selected is in field, and parental is 1:6, and planting density is male parent is every mu of 900 strains, and female parent is every mu of 4200 strains;

Step 5: topdress: when corn grows to highly for 1.4m, every mu imposes 8kg urea;

Step 6: field management: every 20 days, goes to the field and carries out weeding, rejecting field hybrid strain and be separated strain;

Step 7: surgery male parent: after male parent loose powder terminates, cut down male parent;

Step 8: results: after corn maturation, goes to the field and gathers corn.

The corn per mu yield 596.0kg of results, compares volume increase 8.7% with existing corn.

Embodiment 2

Step one: seed selection: remove mouldy seed and the seed of skin breakage, select full iblet as seed;

Step 2: wholely: the topsoil in 10 centimetres, field is smashed, then rakes with rake;

Step 3: fertilising: urea, diammonium phosphate and potassium sulfate are broadcasted sowing in field, wherein, urea 25kg/ mu, diammonium phosphate 20kg/ mu, potassium sulfate 7kg/ mu;

Step 4: sowing: planting seed step one selected is in field, and parental is 1:6, and planting density is male parent is every mu of 800 strains, and female parent is every mu of 4000 strains;

Step 5: topdress: when corn grows to highly for 1.3m, every mu imposes 5kg urea;

Step 6: field management: every 15 days, goes to the field and carries out weeding, rejecting field hybrid strain and be separated strain;

Step 7: surgery male parent: after male parent loose powder terminates, cut down male parent;

Step 8: results: after corn maturation, goes to the field and gathers corn.

The corn per mu yield 587.5kg of results, compares every mu of volume increase 7.1% with existing corn.

Embodiment 3

Step one: seed selection: remove mouldy seed and the seed of skin breakage, select full iblet as seed;

Step 2: wholely: the topsoil in 18 centimetres, field is smashed, then rakes with rake;

Step 3: fertilising: urea, diammonium phosphate and potassium sulfate are broadcasted sowing in field, wherein, urea 25kg/ mu, diammonium phosphate 20kg/ mu, potassium sulfate 7kg/ mu;

Step 4: sowing: planting seed step one selected is in field, and parental is 1:6, and planting density is male parent is every mu of 1000 strains, and female parent is every mu of 4500 strains;

Step 5: topdress: when corn grows to highly for 1.4m, every mu imposes 10 kg urea;

Step 6: field management: every 30 days, goes to the field and carries out weeding, rejecting field hybrid strain and be separated strain;

Step 7: surgery male parent: after male parent loose powder terminates, cut down male parent;

Step 8: results: after corn maturation, goes to the field and gathers corn.

The corn per mu yield 590.0kg of results, compares volume increase 7.6% with existing corn.

Last it is noted that above embodiment only in order to illustrate the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification with reference to each above-mentioned embodiment to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent to replace; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in right of the present invention.

Claims (1)

1. an implantation methods for corn, is characterized in that: concrete steps are as follows:

Step one: seed selection: remove mouldy seed and the seed of skin breakage, select full iblet as seed;

Step 2: wholely: the topsoil of field 10-18 centimetre is smashed, then rakes with rake;

Step 3: fertilising: urea, diammonium phosphate and potassium sulfate are broadcasted sowing in field, wherein, urea 25kg/ mu, diammonium phosphate 20kg/ mu, potassium sulfate 7kg/ mu;

Step 4: sowing: planting seed step one selected is in field, and parental is 1:6, and planting density is male parent is every mu of 800-1000 strain, and female parent is every mu of 4000-4500 strain;

Step 5: topdress: when corn grows to highly for 1.3-1.4m, every mu imposes 5-10 kg urea;

Step 6: field management: every 15-30 days, goes to the field and carries out weeding, rejecting field hybrid strain and be separated strain;

Step 7: surgery male parent: after male parent loose powder terminates, cut down male parent;

Step 8: results: after corn maturation, goes to the field and gathers corn.