Brendon McCullum admits New Zealand must improve in England

The three-game series in New Zealand earlier this year, the two sides drew 0-0, while England beat most of these conflicts, Ram know several accessories that will return the most severe test.
He said: "Homecoming series is very good for us, we played cricket could not get the trophy, it was great, but it is that we as a team ...
"We know that this series will be very different, will be more difficult England know more about us, we are playing in your backyard, so we will have to raise our performance home.
"We had a good preparation, despite some interruptions winter has been a good time as a team, we have to wait and see how it has evolved.
"They have a knowledge of English conditions - in particular bowler to pass the ball more than their home, because it is struggling a bit, Kookaburra ball.
"They will be a more dangerous proposition, from this point of view, their hitters clinicians at home, if you look at recent history still believe we have the players will be favored conditions too - especially bowling unit.Confidence
"I do not think they do not respect our home. Introductory series is very good, we start with the considerable advantage of the display, so that our confidence grew, the series continues, maybe eat in your faith.
"This is for our early years, as a group, but the series of signs, as a group, we want to show signs of a more regular basis. Showed consistency, now fighting in the characteristics and innovation of the external conditions.
"We are trying to find out if you play four leveler or the same set our stuff, we'll see in the morning to test.
"It seems very dry, the conditions of the general conditions that must be taken prognosis. Either way, if we have a good choice, select the option of fine-tuning or sewing machine., I will not lose too much."
Around black hat leveler selected issues, Ram said: "It's definitely playing Neil Wagner, the last post or Chris Martin and Doug Bracewell.