Cultivation techniques of Zhengmai 9023

Zhengmai 9023 (formerly Zhengzhou 9023) was selected by the High yield breeding Research Laboratory of Henan Academy of Agricultural Sciences and approved by the crop Variety approval Committee of Jiangsu Province in September 2002.

Main characteristics

Zhengmai 9023 is weak spring, the seedlings are erect, the leaves are dark green, the leaves are broad, the seedlings are strong, the tillering ability is medium, and the panicle rate is high, generally about 350000 ears per 667m2. The plant type is compact, the ventilation and light transmittance is good, the plant height is 80 ~ 85 cm, the stem is stout and elastic, the lodging resistance is strong, the ear is spindle-shaped, the seed setting is good, and the fruit is 30 ~ 35 grains per ear. Long awn, white shell, white grain, horny, 1000-grain weight 45murmur47g, good plumpness, good commercial quality. The grain filling is fast, the late sowing is early, the maturity is about 3 days earlier than Yumai 18, the panicle layer is neat, and the late ripening phase is good.

The quality test of the quality supervision, inspection and testing institution of the Ministry of Agriculture shows that the cutin rate is more than 90%, the crude protein content is 15.2%, the wet gluten content is 35.7%, the sedimentation value 55.2ml, the dough formation time 10.5min, the dough stability time 19.9min, the quality index exceeds the national standard strong gluten high quality wheat variety first class standard, especially the gluten strength is high, has the higher flour added value. It has good comprehensive resistance, strong waterlogging resistance, fertilizer resistance and lodging resistance. Identified by the Institute of Plant Protection of Henan Academy of Agricultural Sciences and the Institute of Plant Protection of Shaanxi Academy of Agricultural Sciences, it is highly resistant to scab, high resistance to expansion, high resistance to spindle stripe mosaic virus, moderate resistance to leaf blight, leaf rust, stripe rust and mild sheath blight.

Cultivation techniques of high quality and high yield

Sowing at the right time to cultivate strong seedlings. Zhengmai 9023 is precocious and weak spring, and the suitable sowing date in northern Jiangsu is from October 20 to early November, and should not be sown prematurely. Because the variety is a mid-panicle and large-grain variety with medium tillering ability, it is necessary to increase the basic seedlings properly. The sowing rate of 667 square meters is 10 kg, and the basic seedlings are about 150000. Fine soil preparation, sunny days, seed dressing, uniform seed drop, elimination of "three seeds" (deep, dew, clump seeds), sowing or timely watering in case of drought, early seedling whole seedling, before and after the three-leaf heart period, 667 square meters were sprayed with 40 grams of 15% paclobutrazol 30 murine to the right amount of water to promote root tillering, enhance resistance and strong seedlings overwinter.

Rational management of fertilizer and water, high yield and high quality, fertilizer resistance and lodging resistance of this variety is suitable for planting under middle and upper fertility conditions, requiring pure nitrogen 18 Murray 20 kg, p2o57--8 kg, k2o8--9 kg. According to the characteristics of fertilizer required by the variety in different stages and the characteristics of easy absorption of nitrogen, easy fixation of phosphorus and easy movement of potassium, rational application of fertilizer, according to the principle of "adequate application of base fertilizer, elimination of winter wax fertilizer, control of returning green fertilizer, re-application of jointing and booting fertilizer". Improve and regulate the population quality in each growth period to achieve both high yield and high quality.

Control weeds. Hongze County, Jiangsu Province belongs to the rice-wheat double cropping area, the main weeds in the wheat field are Niangmai, wild oat, pig calamity, nesting purse, shepherd's purse and so on. Make it 60ml / 667m2 with 20% dimethyl tetrachloride 125ml mixture to spray 60kg of water 50Mel / 125ml, and control pig calamity, big nest purse, shepherd's purse and so on from 3-leaf stage to pre-jointing stage of wheat seedlings; 50kg of water with 30ml of 10% Poma per 667m2 after wheat emergence, weeds 2-leaf stage to tillering stage to control Niang Mai, wild oats and so on. When chemical removal, we should choose the appropriate time, advocate "except for early and small, mainly for winter and auxiliary for spring", and make sure that the mixture should be evenly mixed, the spray should be uniform, the application time should be accurate, the dosage and the application area should be accurate, and the control effect should be improved. to avoid drug damage.

Control diseases and insect pests. The prevention and control of diseases and insect pests should adhere to "prevention first, comprehensive prevention and control". Every 667 square meters, 8 grams of effective ingredients should be sprayed with appropriate amount of water at the jointing and booting stage of wheat seedlings to prevent powdery mildew and stripe rust, and pay attention to the prevention and control of sheath blight in rainy years. Strengthen the prediction of wheat ear aphids, armyworm, wheat spiders and other pests, to achieve the control target, immediate drug control. At the same time, it is necessary to clear the ditch and manage the soil moisture in time, realize the matching of the ditch system, ensure the patency of the field water system, reduce the field humidity and improve the field microclimate in order to control the occurrence of diseases.